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Finding the Fourth Proportional to 119,419.32, 164,799.99 and 68,431.02

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Solution

The fourth proportional to 119,419.32, 164,799.99 and 68,431.02 is: 94,435.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,419.32 : 164,799.99 = 68,431.02 : x
  2. Step 2: Convert to fraction form
    119,419.32/164,799.99 = 68,431.02/x
  3. Step 3: Cross multiply
    119,419.32x = 164,799.99 × 68,431.02
  4. Step 4: Simplify right side
    119,419.32x = 11,277,431,411.69
  5. Step 5: Solve for x
    x = 11,277,431,411.69/119,419.32
  6. Step 6: Final answer
    x = 94,435.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.